|本期目录/Table of Contents|

[1]张莹,孙广俊,李鸿晶.近断层强地震地面运动特征参数分析[J].南京工业大学学报(自然科学版),2017,39(01):85-92.[doi:10.3969/j.issn.1671-7627.2017.01.014]
 ZHANG Ying,SUN Guangjun,LI Hongjing.Characteristic parameters analysis of near-fault earthquake-induced ground motions[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2017,39(01):85-92.[doi:10.3969/j.issn.1671-7627.2017.01.014]
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近断层强地震地面运动特征参数分析()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
39
期数:
2017年01期
页码:
85-92
栏目:
出版日期:
2017-01-21

文章信息/Info

Title:
Characteristic parameters analysis of near-fault earthquake-induced ground motions
文章编号:
1671-7627(2017)01-0085-08
作者:
张莹孙广俊李鸿晶
南京工业大学 土木工程学院,江苏 南京 211800
Author(s):
ZHANG YingSUN GuangjunLI Hongjing
College of Civil Engineering,Nanjing Tech University,Nanjing 211800,China
关键词:
近断层 强震地面运动 反应谱 参数分析
Keywords:
near-fault strong earthquake-induced ground motion response spectrum parameter analysis
分类号:
TU375
DOI:
10.3969/j.issn.1671-7627.2017.01.014
文献标志码:
A
摘要:
针对以往用于描述一般地震动的强度表征参数是否也适用于近断层强地震动的问题,筛选出汶川地震中断层距100 km内的102条强震记录,通过时程曲线和反应谱分析,研究各类地震动强度指标及其谱参数特性随断层距的变化规律。结果表明:水平向及竖向的峰值速度与峰值加速度比不适合作为近断层地震动的强度表征参数,且竖向与水平向峰值加速度比为1/2~2/3的公认取值标准不适用于近断层地震动的情况。反应谱分析中,竖向加速度反应谱较水平向反应谱包含更多的高频成分,且谱形窄,特征周期明显较小。随着断层距的增加,竖向加速度平均反应谱衰减速度更快。针对近断层地震动,规范设计谱的平台值(βmax)应适当增大,以提高安全储备。
Abstract:
102 strong ground motion records within the rupture distance of 100 km during the Wenchuan earthquake were selected to study that whether intensity measures of ground motions could describe the characteristics of near-fault earthquake-induced ground motions.Both time-history curves and response spectrums were performed to study the intensity measures of ground motions and the characteristics of spectrum parameters in different rupture distances.Results showed that the ratio of horizontal and vertical peak ground velocity to acceleration could not represent the intensity measure of near-fault ground motions.Also,the choosing value standard within 1/2-2/3 of ratio of peak acceleration in vertical and horizontal motions(PVA/PHA)was not suitable for near-fault motions.In contrast to the horizontal acceleration spectrums,more high frequencies were obtained in vertical spectrums which presented the narrow shape and the smaller characteristic period.With the increasing rupture distances,the average vertical acceleration spectrum attenuated more rapidly.It is recommended that the βmax in code design spectrum should give a reasonable increase for near-fault earthquake-induced ground motions.

参考文献/References:

[1] 郭恩.近断层强震地面运动的研究[D].北京:北京工业大学,2011.
[2] 王东升,冯启民,翟桐.近断层地震动作用下钢筋混凝土桥墩的抗震性能[J].地震工程与工程振动,2003,23(1):95.
[3] SHIN T C,TENG T L.An overview of the 1999 Chi-Chi,Taiwan,earthquake [J].Bulletin of the seismological society of America,2001,91(5):895.
[4] 李鸿晶,陆鸣,温增平,等.汶川地震桥梁震害的特征[J].南京工业大学学报(自然科学版),2009,31(1):24.
[5] WANG G Q,ZHOU X Y,ZHANG P Z,et al.Characteristics of amplitude and duration for near fault strong ground motion from the 1999 Chi-Chi,Taiwan earthquake[J].Soil dynamic and earthquake engineering,2002,22(1):73.
[6] 于海英,王栋,杨永强,等.汶川8.0级地震强震动加速度记录的初步分析[J].地震工程与工程振动,2009,29(1):1.
[7] XU G Y,GAO M T.The application of potential rupture surface model on PSHA in the area near the 2008 Wenchuan earthquake [C]//Proceedings of the 6th China-Japan-US Trilateral Symposium on Lifeline Earthquake Engineering.International Efforts in Lifeline Earthquake Engineering.Chengdu:American Society of Civil Engineers,2013:537.
[8] OETTLE N K,BRAY J D.Geotechnical mitigation strategies for earthquake surface fault rupture[J].Journal of geotechnical and geoenvironmental engineering,2013,139(11):1864.
[9] LIU T L,LUAN Y,ZHONG W.A numerical approach for modeling near-fault ground motion and its application in the 1994 Northridge earthquake[J].Soil dynamic and earthquake engineering,2012,34(1):52.
[10] 李明.近断层地震动对结构抗震设计的影响研究[D].哈尔滨:中国地震局工程力学研究所,2010.
[11] 叶列平,马千里,缪志伟.结构抗震分析用地震动强度指标的研究[J].地震工程与工程振动,2009,29(4):9.
[12] 王长龙.近断层地震动作用下钢框架结构的地震响应分析[D].北京:北京交通大学,2008.
[13] 胡聿贤.地震工程学[M].2版.北京:地震出版社,2006.
[14] 周雍年,周正华,于海英.设计反应谱长周期区段的研究[J].地震工程与工程振动,2004,24(2):15.

备注/Memo

备注/Memo:
收稿日期:2015-06-24
基金项目:国家自然科学基金(51478222); 江苏省高校自然科学研究面上项目(13KJB560003)
作者简介:张莹(1988—),女,江苏南京人,博士,主要研究方向为工程抗震; 孙广俊(联系人),副教授,E-mail:gjsun2004@163.com.
引用本文:张莹,孙广俊,李鸿晶.近断层强地震地面运动特征参数分析[J].南京工业大学学报(自然科学版),2017,39(1):85-92..
更新日期/Last Update: 2017-01-15